COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Mooney M20 Series Aeroplanes AD/M20/7 Amdt 1 Landing Gear Warning System - Modification 5/67 Applicability: All models M20C, M20D and M20E fitted with electrically operated landing gear. Document: Mooney VB 20-130. Compliance: Forthwith.